Red Tart Cherry Extract
Tart cherry provides naturally occurring plant compounds and has been studied for its relationship with melatonin levels, sleep time and sleep efficiency.
Sleep timing and duration
Formula guide
YU Sleep Ingredients: What Is in the Sleep Drops?
YU Sleep contains ten ingredients selected to support relaxation, sleep timing and a calmer evening routine. The formula includes 0.9 mg of melatonin per serving alongside tart cherry extract, 5-HTP, magnesium glycinate, lemon balm, L-theanine and GABA.
10 highlighted ingredients
0.9 mg melatonin
Liquid drop format
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10 IngredientsA broad nighttime formula
0.9 mg MelatoninA measured serving amount
Two DroppersSimple evening serving
Liquid FormatNo capsules to swallow
Complete formula
What Ingredients Are in YU Sleep?
YU Sleep contains red tart cherry extract, 5-HTP, vitamins B6 and B2, magnesium glycinate, apigenin, lemon balm extract, L-theanine, 0.9 mg melatonin and GABA.
5-HTP
5-HTP is a precursor involved in serotonin production. Serotonin is connected with mood, relaxation and the body's production of melatonin.
Relaxation supportVitamin B6
Vitamin B6 supports normal nervous-system function and appears in research examining melatonin and plant-based nighttime combinations.
Formula supportVitamin B2
Vitamin B2 supports normal energy metabolism and helps maintain normal nervous-system function.
Nutritional supportMagnesium Glycinate
Magnesium glycinate combines magnesium with glycine and is commonly chosen for evening formulas because it is generally regarded as a gentle magnesium form.
Evening mineral supportApigenin
Apigenin is a plant flavonoid found in botanicals such as chamomile. It is included in formulas designed around relaxation and nighttime calm.
Botanical calmLemon Balm Extract
Lemon balm is a traditional calming herb used in nighttime blends. It also appears in a 2019 study that combined melatonin, vitamin B6 and medicinal plants.
Calming botanicalL-Theanine
L-theanine is an amino acid commonly used to support a relaxed mental state without making the formula dependent on a high melatonin dose.
Relaxed focusMelatonin
YU Sleep contains 0.9 mg of melatonin per serving. Melatonin helps signal the body's normal sleep timing and is widely studied in relation to sleep onset and sleep quality.
Sleep timingGABA
GABA is a neurotransmitter associated with reduced neural activity and relaxation. It is included to complement the formula's calming ingredients.
Nighttime relaxation
Formula logic
How Do the YU Sleep Ingredients Work Together?
The formula combines ingredients that address three related parts of a nighttime routine: relaxation before bed, normal sleep timing and support for staying settled through the night.
Relaxation Before Bed
L-theanine, GABA, lemon balm and apigenin support the calming side of the formula.
Normal Sleep Timing
Melatonin, tart cherry and vitamin B6 support the formula's sleep-wake timing focus.
Broader Nighttime Support
Magnesium glycinate, 5-HTP and vitamin B2 add mineral, amino-acid and nutritional support.
Why Does the 0.9 mg Melatonin Amount Stand Out?
YU Sleep uses 0.9 mg of melatonin per serving, allowing the formula to combine a measured melatonin amount with nine additional ingredients rather than relying on melatonin alone.
This makes YU Sleep relevant to buyers who prefer a multi-ingredient liquid supplement designed around both relaxation and sleep timing.
See the Current YU Sleep Packages
The one-, three- and six-bottle packages all contain the same ten-ingredient formula. The six-bottle package currently offers the lowest cost per bottle.
View Packages and DiscountsIngredient research
What Does Research Say About Key YU Sleep Ingredients?
Published research supports the selection of several ingredients used in YU Sleep, particularly tart cherry, melatonin, GABA, L-theanine, 5-HTP and combinations containing vitamin B6 and lemon balm.
A randomised controlled trial found increased melatonin content and improvements in time in bed, total sleep time and sleep efficiency after tart cherry juice concentrate.
A pilot study reported improvements in sleep quality, sleep onset latency and total sleep duration with a combination containing melatonin, vitamin B6 and medicinal plants.
Research has examined oral GABA in relation to stress and sleep, supporting its use in calming nighttime supplements.
A study of a GABA and L-theanine mixture reported reduced sleep latency and improved non-REM sleep measures.
A systematic review assessed melatonin supplementation and sleep quality across published studies.
Recent research has examined 5-HTP supplementation in relation to sleep quality and the serotonin-melatonin system.
How Do You Take YU Sleep Drops?
YU Sleep is taken as two droppers as part of an evening routine. Follow the current bottle directions and use the serving consistently.
Who May Prefer the YU Sleep Formula?
YU Sleep may suit adults who prefer liquid drops, want a multi-ingredient nighttime supplement and like the convenience of combining melatonin with calming botanicals, amino acids and magnesium.
Try the Complete YU Sleep Formula
Choose one, three or six bottles and receive the same ten-ingredient liquid formula in every package.
Check the Current YU Sleep OfferCommon questions
YU Sleep Ingredients FAQs
Does YU Sleep contain melatonin?
Yes. YU Sleep contains 0.9 mg of melatonin per serving.
Does YU Sleep contain magnesium?
Yes. Magnesium glycinate is included in the formula.
Does YU Sleep contain tart cherry?
Yes. Red tart cherry extract is one of the highlighted ingredients.
Is YU Sleep a liquid supplement?
Yes. It is taken as two droppers and may suit buyers who prefer liquid supplements over capsules.
How many ingredients are in YU Sleep?
YU Sleep highlights ten ingredients, counting vitamins B6 and B2 separately.
Related YU Sleep Pages
Sources
- YU Sleep official website — formula, serving and melatonin amount.
- Howatson et al., 2012 — tart cherry, melatonin and sleep quality.
- Lemoine et al., 2019 — melatonin, vitamin B6 and medicinal plants.
- Byun et al., 2020 — oral GABA, stress and sleep.
- Kim et al., 2019 — GABA and L-theanine mixture.
- 2021 systematic review — melatonin supplementation and sleep quality.
- 2024 study — 5-HTP supplementation and sleep quality.
Supplement note: YU Sleep is a dietary supplement and is not intended to diagnose, treat, cure or prevent disease. Follow the current bottle directions.